L'Oréal Paris Sulfate Free Bond Repair+ Shampoo

−62%per oz

OLAPLEX · $32.99L'Oréal Paris · $9.97

Shared: Same job in the routine: a sulfate-free shampoo that follows a bond pre-treatment and keeps bleached or heat-damaged hair from sliding back between treatments.
The trade-off: Where Olaplex builds in its patented bis-aminopropyl diglycol dimaleate, L'Oréal relies on citric acid and amino acids, so it maintains hair rather than claiming to relink broken bonds.
Sizes: 250 ml against 200 ml

OLAPLEX No.4 Bond Maintenance Shampoo dupe

No.4 Bond Maintenance Shampoo costs about $32.99 for 250 ml ($3.90 / fl oz). The closest match below is L'Oréal Paris Sulfate Free Bond Repair+ Shampoo at $9.97, about 62% less per ounce. Each pair is compared on format, finish and key ingredients, including what the dupe doesn't do.

Sulfate-free shampoo carrying Olaplex's patented bond-building ingredient, made to keep up the results of No.3 between treatments. Gentle isethionate and glycinate cleansers; color-safe.

Original: $32.99
Cheapest dupe: $9.97
You save: 62%

Amazon prices as of Sep 25, 2026, 7:41 PM ET, subject to change: the price on Amazon at checkout is the one that applies.

Buy the $9.97 dupe See the original

The dupe, side by side

The original

OLAPLEX

No.4 Bond Maintenance Shampoo

$32.99

$3.90 / fl oz

−62%per oz

Cost per fl oz

OLAPLEX$3.90 / fl oz

L'Oréal Paris$1.47 / fl oz

$23.02 less at checkout than the original.

Size: Original · OLAPLEX250 ml; Dupe · L'Oréal Paris200 ml
Key ingredients: Original · OLAPLEXBis-aminopropyl diglycol dimaleate; Dupe · L'Oréal ParisCitric acid, Amino acids

What matches

Same job in the routine: a sulfate-free shampoo that follows a bond pre-treatment and keeps bleached or heat-damaged hair from sliding back between treatments.

What the dupe does worse

Where Olaplex builds in its patented bis-aminopropyl diglycol dimaleate, L'Oréal relies on citric acid and amino acids, so it maintains hair rather than claiming to relink broken bonds.

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Questions

What is the best dupe for OLAPLEX No.4 Bond Maintenance Shampoo?

L'Oréal Paris Sulfate Free Bond Repair+ Shampoo at about $9.97. Same job in the routine: a sulfate-free shampoo that follows a bond pre-treatment and keeps bleached or heat-damaged hair from sliding back between treatments.

How much cheaper is L'Oréal Paris Sulfate Free Bond Repair+ Shampoo than No.4 Bond Maintenance Shampoo?

No.4 Bond Maintenance Shampoo costs about $32.99 for 250 ml, or $3.90 / fl oz. L'Oréal Paris Sulfate Free Bond Repair+ Shampoo works out at $1.47 / fl oz, roughly 62% less per ounce.

What does L'Oréal Paris Sulfate Free Bond Repair+ Shampoo do worse than No.4 Bond Maintenance Shampoo?

Where Olaplex builds in its patented bis-aminopropyl diglycol dimaleate, L'Oréal relies on citric acid and amino acids, so it maintains hair rather than claiming to relink broken bonds.